Mike holt enterprises inc.
Raised floor electrical requirements nyc mike holts.
The ampacity of branch circuit conductors and overcurrent devices for pool or out door spa and hot tub water heaters must not be less than 125.
An arc fault circuit interrupter is a device intended to de energize the circuit when it detects the current waveform characteristics unique to an arcing fault.
Branch circuit wiring methods.
In 1974 mike realized there was a need for quality electrical training and opened mike holt.
As the us economy continues to move from being manufacturing based to being information based it is increasingly important to understand the article 645 requirements for information technology equipment ite.
Therefore much of art.
According to ul standard 486 a b a terminal lug connector.
Does this mean that if you have it equipment you must create an nfpa 75 and nec 645 compliant it room.
645 is to reduce the spread of fire and smoke for any room that conforms to nfpa 75 standard for the protection of information technology equipment the raised floors common in information technology it rooms pose additional challenges to achieving this goal.
The raised floor must be of suitable construction and the area under the floor must be accessible.
645 1 gives us the electrical requirements for an it room.
Annex j is certainly not an all inclusive list of the requirements for accessibility for disabled per sons but it does include the most common requirements about which electricians and electrical engineers need to know.
7 mike holt s illustrated guide to understanding the nec requirements for gfci and afci protection a afci definition.
By mike holt for ec m magazine what you don t know about code requirements for information technology equipment rooms may be shocking.
He was a journeyman electrician master electrician and electrical contractor.
4 mike holt s illustrated guide to understanding the national electrical code volume 2 article 680 swimming pools spas hot tubs fountains and similar installations 680 9 electric water heater.
645 covers raised floor requirements.
